Contract 0x4c28f48448720e9000907bc2611f73022fdce1fa 6


Contract Overview

653,526.379259575943139083 MATIC

MATIC Value:
$488,380.26 (@ $0.75/MATIC)

Txn Hash Method
Value [Txn Fee]
0xd9bf4b7acbe7ed87065f3c50d0e5611cf7c85f2690782f64d87b169d801f9d53Approve337105662022-09-29 11:04:2648 mins ago0x770622942f4f390def3bc9521475565905c6cea8 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00141604092 30.555000015
0x18eddd3a38ee0c77ca3d31571afe532283fff0200e14f9d7012460c6d9eb723aApprove337103382022-09-29 10:56:3856 mins ago0x2c2e7dca11c0cf96e27ba53e196ab79b4c123b0a IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00234824451
0x19d8d75a6c9be24d09b495233931af9971683dcebec63352999ce208ae3c9b4eApprove337095692022-09-29 10:30:081 hr 22 mins ago0x30f17c8e4d2a51a5569315b86086d16de3b87e6b IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.001452063802 31.332293339
0x3c6ca94f86eda4671a455f0bdf864ba3ea61e61474a78280405a0b4da4d4d36fApprove337087132022-09-29 10:00:401 hr 52 mins ago0x7d9805814829076d1a30263cd875a33e8e67df51 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.001416040921 30.555000024
0x002a98188ec47fe4521d84260714e40becfcb3b9ff112600727a61d9261d64fcApprove337080742022-09-29 9:38:402 hrs 14 mins ago0x5785333f1920d0d4b96559d9f347eb37f0093df4 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00079332 30.000000017
0x56bf1ce1d18ae704ae2cebf340aeeb045df0308b4fd49d7cf1ed2d7618f6ec50Approve337080742022-09-29 9:38:402 hrs 14 mins ago0x5785333f1920d0d4b96559d9f347eb37f0093df4 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000014
0x428dac6cd8d514ce9fe386d2763ae6b6fcaf0bc6dfb6d51c4b9526ceefeb7c02Approve337068402022-09-29 8:56:142 hrs 56 mins ago0xdbedc9e4a1c3b11ef992104d4c37747d4a50c0a7 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.001390320001 30.000000025
0x7a294e1faa3deb7c9ae3a645d317c146462531f50dc0133328e4b05a0f40e536Approve337060992022-09-29 8:30:443 hrs 21 mins ago0x9084474c434c0ddd42109e860d6bc68ce2d01771 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000017
0x8685315fb4f798c784bf4d3b34e3e3df9bcf86fea998527d6a8aae931f85e624Approve337033672022-09-29 6:56:454 hrs 55 mins ago0x16341b66d8e3b637ede03bed9e36c4bd9a50d3e8 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000016
0x4665285a1f6b80b8aebf4d99a9c9e40c74f680bea6acc30ce049fead8d98bca2Approve337025792022-09-29 6:29:335 hrs 23 mins ago0x62ddb5ffbd4348fc557f4263647d01bf808008f0 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000021
0x8fdcf1fb471505f6cac83660357f2cad7b7ab896b5a2c0caad5f610077b49c9bApprove337022382022-09-29 6:17:515 hrs 34 mins ago0x628abe461b0e604160d9e975f0089e3e8fc6e4ee IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.00000002
0x343439d14ffb3a164c3d0601449f17bcb04a9e953e827eb087102c2260ccbd92Approve337013202022-09-29 5:46:196 hrs 6 mins ago0x0edaeb5104f07510bb171db82d5f16ecc775b331 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000017
0xef050c91d8694d1b167549ea77df2ba5f2dd0d6d39c4e303ba566a6ac483ef88Approve337010472022-09-29 5:36:536 hrs 15 mins ago0x33c9c141a314395e3b15b60e94b7fcf2a7aeb5a7 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.001390320001 30.000000027
0xdd3b08046ce514b2b8d7c52d535004bc8ca459ec46ddf555fb0e00ca2e9a8d7aApprove337005172022-09-29 5:18:416 hrs 33 mins ago0x1e18b8b6f27568023e0b577cbee1889391b2f444 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.001798517951 38.807999999
0x115d733b048b8ff76f06f8ebeb263425c5c78178c34bdc20f56dec1a3af86a13Approve336997072022-09-29 4:50:447 hrs 1 min ago0x476d613670a3efc70d5c8c29093e4d3d67fa373b IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000018
0x849934b4bec700846541108183c15567603ecfc2e08d075c9b98b301e00e994cApprove336989592022-09-29 4:25:027 hrs 27 mins ago0xf4bb7eda8d26a70e2dd0459e6bcbe35436d5e7e6 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00213664841 46.104100008
0xf8bd95d9b143de58b5037cd92e0e38559ef6ab9e7bac0063258b6232bc6afafcApprove336965112022-09-29 3:00:388 hrs 52 mins ago0xdbc0b18a74c90683760bb9a085851178b2ad2798 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000016
0x310b87757662b62125549faf94faa53074bf2397aa5c52f10ef09c2ccb2210dbApprove336959332022-09-29 2:40:399 hrs 12 mins ago0x92ab2157313732fdc75c609a29bab3ea53e0f495 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000017
0x6816b2df6327061cf0886776b546c8abc8fc435d8d95fffd838f71ffed9c9acdApprove336958792022-09-29 2:38:519 hrs 13 mins ago0xe7f97225afa1cf2f0f9285116234e77d981bcb32 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000013
0x1a060695497fb3b567778c11e48470ccd29861025a6c5e4c9bada107636cbceaApprove336934052022-09-29 1:11:3010 hrs 41 mins ago0x47d5ded3ff8da99c37e6fff497b7effbfbc74492 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00141604092 30.555000014
0x00b62d1541eb29c0c697d77693ee18a7e49442fc8cee0a941f80c9f4e3113ce9Approve336926832022-09-29 0:46:4211 hrs 5 mins ago0xca03e9501219eab4230353c7e81c929e25f8c28e IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139100172 30.014709998
0x83c32ee73be7ddbdd8075b2ee2336da0a37a1c18c4c7fa1b8a75111ec0f67a44Approve336919142022-09-29 0:20:1211 hrs 32 mins ago0xa782ecf651622dc8fe00d21ddf4f197d82f2f9cb IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000017
0x54d1f8e01a5c3ea278fb9453aaa0074f465bba7aeaa07c9f31ebdb46db83955aApprove336890292022-09-28 22:41:0213 hrs 11 mins ago0x1af2bcd579ffdaba37da1a25a2b400b6b056e777 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00141604092 30.555000011
0xe9d7a63bad2bb01285dd6488ca2559b9e4ec2e3411ff7a121a8a8b9a650d2202Approve336888382022-09-28 22:34:2813 hrs 18 mins ago0x5c88f94d874dbb54ffae9d931e35abf20c04f27d IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000011
0x6b94752b9c0c6d3602d5edd32dd8433cabfb9a81ab7d0265a48484e9849d24e0Approve336886282022-09-28 22:27:1213 hrs 25 mins ago0xc19f45b3c78e4b344ba7e97339671e97beb564b9 IN  0x4c28f48448720e9000907bc2611f73022fdce1fa0 MATIC0.00139032 30.000000014
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x6206a86edffa52ffbd0b941f10502208a015b8caba525d7470fe1c27d8c33a70337114842022-09-29 11:35:5816 mins ago 0x8fd175fda06aeb02d8e10d3b9dead8a122d4d9d8 0x4c28f48448720e9000907bc2611f73022fdce1fa10.188150963812660211 MATIC
0xcaa10562aaffbef260e9160e4728a50af178e4250292766aa22e23b0b80bad52337113482022-09-29 11:31:1821 mins ago 0xfed3c880ff02b195abee916328c5a3953976befd 0x4c28f48448720e9000907bc2611f73022fdce1fa46 MATIC
0x60b649bd9ccc7f78bd8977074536bce520e563ceef374b9afc9b5b754b3a3104337112642022-09-29 11:28:2624 mins ago 0x8fd175fda06aeb02d8e10d3b9dead8a122d4d9d8 0x4c28f48448720e9000907bc2611f73022fdce1fa13.137747118951008205 MATIC
0x98a4615fc04eb12b60bc3136179113b523e4426e5f94ca4d3790908e65622357337112262022-09-29 11:27:0625 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0x8fd175fda06aeb02d8e10d3b9dead8a122d4d9d832.592593016188940492 MATIC
0x409e3854824667a40e82406c51cd48c95ce87c9279f5d7012eb14d4fafd1f5ba337111682022-09-29 11:25:1027 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0x1a156370b3ac7c6cd20c38ece0474048cdb5a91c106.06655003370774841 MATIC
0xfdfc55cafae058f041f825a418b74bd2d0cd88ae46d56f7dfbc364aad965cfe4337111682022-09-29 11:25:1027 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0x1a156370b3ac7c6cd20c38ece0474048cdb5a91c106.06655003370774841 MATIC
0xc603ca28d9d7e77b914017e2d05de0ec882c654edd13986e601812241440d611337111542022-09-29 11:24:3828 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0x1a156370b3ac7c6cd20c38ece0474048cdb5a91c106.257041562182473276 MATIC
0x6de24368871b6a663b374fd359690f38454de5cfbe5553b29096d3c87baa391c337110882022-09-29 11:22:2230 mins ago DFYN Network: Router 0x4c28f48448720e9000907bc2611f73022fdce1fa1 MATIC
0xa0be38608778660e8635534ffe6d0501aae8e386e4b5254e9831b9e8c7d7ae2c337110552022-09-29 11:21:1631 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0x8fd175fda06aeb02d8e10d3b9dead8a122d4d9d820.650308521375150689 MATIC
0x2b08a748ddc1de3c7d66b72ecc1c473c9974b9443047a9241d0931d0eeb467ca337110202022-09-29 11:20:0232 mins ago 0xfed3c880ff02b195abee916328c5a3953976befd 0x4c28f48448720e9000907bc2611f73022fdce1fa85 MATIC
0x99a18c9bb05825005cd1c9c02983811a8ec925d8d72d20d03a1b70fc67b581c1337110132022-09-29 11:19:4832 mins ago 0xfed3c880ff02b195abee916328c5a3953976befd 0x4c28f48448720e9000907bc2611f73022fdce1fa85 MATIC
0xba21eb19e4b68c1c2fa3a8dd7349a7c7b5d3fee7bdcc0111a7e399b32684d84e337109842022-09-29 11:18:5033 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0x1a156370b3ac7c6cd20c38ece0474048cdb5a91c494.570305231470382047 MATIC
0x024e91636c4a28060325e4a78ed88147dc048a130b13354193dad6bf99410582337109792022-09-29 11:18:4034 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0x1a156370b3ac7c6cd20c38ece0474048cdb5a91c494.570305231470382047 MATIC
0xad650ee15b3defda83e32ceaff87e42b2f210e8a1ec25d358a7c833bf62c147b337109782022-09-29 11:18:3834 mins ago Paraswap v5: Augustus Swapper 0x4c28f48448720e9000907bc2611f73022fdce1fa133.81875 MATIC
0x660b2b1c6f77c7d8303601316766ecca676372185c6dc8f011cc616e7bd350bb337109772022-09-29 11:18:3634 mins ago 0x8fd175fda06aeb02d8e10d3b9dead8a122d4d9d8 0x4c28f48448720e9000907bc2611f73022fdce1fa25.063069237294975885 MATIC
0xfe684129de82e412c75e88f087192e13ec514c8af975f6f3ac2df08867b4125a337109772022-09-29 11:18:3634 mins ago 0x8fd175fda06aeb02d8e10d3b9dead8a122d4d9d8 0x4c28f48448720e9000907bc2611f73022fdce1fa31.854680831156973 MATIC
0x8164b02691805fd13a467fa3362ff0d825667bfad94310cd01f1f08b0f68cddd337109772022-09-29 11:18:3634 mins ago 0x8fd175fda06aeb02d8e10d3b9dead8a122d4d9d8 0x4c28f48448720e9000907bc2611f73022fdce1fa101.330841612070798873 MATIC
0xc39cd32d3883806212e8a6bc95db3bfdc0bef7cb39d29a514bf210ed61e80865337109732022-09-29 11:18:2434 mins ago 0xe48a3b29f5997d9739f029b48cdf42eee85aa183 0x4c28f48448720e9000907bc2611f73022fdce1fa54.741811455110284414 MATIC
0xe6cf7237beb11b20b4d9f2ca4d9dab00074d94e117938f02f82d326ba6722b6a337109692022-09-29 11:18:1634 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0x1a156370b3ac7c6cd20c38ece0474048cdb5a91c496.014353069801098876 MATIC
0xb681bbb6d7be05a6538450aea0708d4ce4962fa766edc464380b9c8a834cfd4d337109582022-09-29 11:17:5434 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0xcc69755c19b8df3861387e517ca8ec9761525a07244.140625 MATIC
0xdebb3c7842db634f78c6033158d0230f3f2a2c2cc4970bea2c66383a4cb0e0cb337109562022-09-29 11:17:5034 mins ago 0xf18acc02628009231d7baaf9a7a24c0860dda6cb 0x4c28f48448720e9000907bc2611f73022fdce1fa206.3685 MATIC
0x0e7b3c148cc30afc48cf37c500ccd0d6b7a9d390f7a4a8df5c1db66034093e89337109432022-09-29 11:17:2435 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa Paraswap v5: Augustus Swapper106.898823097161271445 MATIC
0x29fd4a39c5ee77c461aaa847873ec8adde511db80a6483febb078aa362190aeb337109332022-09-29 11:17:0435 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0x8fd175fda06aeb02d8e10d3b9dead8a122d4d9d8150.076107190993266922 MATIC
0x6258d3f9d25ca68363c30c1f0e5150f86f9f80dcf4d1322c67bad04db979557e337109222022-09-29 11:16:4235 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0x8fd175fda06aeb02d8e10d3b9dead8a122d4d9d815.16966155391415589 MATIC
0x754823151c443407ea7671ce51a5b137f945e2a002afa59194aae96ce4327da2337109162022-09-29 11:16:3036 mins ago 0x4c28f48448720e9000907bc2611f73022fdce1fa 0xcc69755c19b8df3861387e517ca8ec9761525a07122.0703125 MATIC
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Contract Source Code Verified (Exact Match)

Contract Name:

Compiler Version

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license
 *Submitted for verification at on 2021-06-29

// Copyright (C) 2015, 2016, 2017 Dapphub

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <>.

pragma solidity >=0.6.6;

contract WETH9 {
    string public name     = "Wrapped Ether";
    string public symbol   = "WETH";
    uint8  public decimals = 18;

    event  Approval(address indexed src, address indexed guy, uint wad);
    event  Transfer(address indexed src, address indexed dst, uint wad);
    event  Deposit(address indexed dst, uint wad);
    event  Withdrawal(address indexed src, uint wad);

    mapping (address => uint)                       public  balanceOf;
    mapping (address => mapping (address => uint))  public  allowance;

    // function() public payable {
    //     deposit();
    // }
    function deposit() public payable {
        balanceOf[msg.sender] += msg.value;
        emit Deposit(msg.sender, msg.value);
    function withdraw(uint wad) public {
        require(balanceOf[msg.sender] >= wad, "");
        balanceOf[msg.sender] -= wad;
        emit Withdrawal(msg.sender, wad);

    function totalSupply() public view returns (uint) {
        return address(this).balance;

    function approve(address guy, uint wad) public returns (bool) {
        allowance[msg.sender][guy] = wad;
        emit Approval(msg.sender, guy, wad);
        return true;

    function transfer(address dst, uint wad) public returns (bool) {
        return transferFrom(msg.sender, dst, wad);

    function transferFrom(address src, address dst, uint wad)
        returns (bool)
        require(balanceOf[src] >= wad, "");

        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
            require(allowance[src][msg.sender] >= wad, "");
            allowance[src][msg.sender] -= wad;

        balanceOf[src] -= wad;
        balanceOf[dst] += wad;

        emit Transfer(src, dst, wad);

        return true;

                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007
 Copyright (C) 2007 Free Software Foundation, Inc. <>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
  The GNU General Public License is a free, copyleft license for
software and other kinds of works.
  The licenses for most software and other practical works are designed
to take away your freedom to share and change the works.  By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users.  We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors.  You can apply it to
your programs, too.
  When we speak of free software, we are referring to freedom, not
price.  Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.
  To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights.  Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
  For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received.  You must make sure that they, too, receive
or can get the source code.  And you must show them these terms so they
know their rights.
  Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.
  For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software.  For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.
  Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so.  This is fundamentally incompatible with the aim of
protecting users' freedom to change the software.  The systematic
pattern of such abuse occurs in the area of products for individuals to
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have designed this version of the GPL to prohibit the practice for those
products.  If such problems arise substantially in other domains, we
stand ready to extend this provision to those domains in future versions
of the GPL, as needed to protect the freedom of users.
  Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
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avoid the special danger that patents applied to a free program could
make it effectively proprietary.  To prevent this, the GPL assures that
patents cannot be used to render the program non-free.
  The precise terms and conditions for copying, distribution and
modification follow.
                       TERMS AND CONDITIONS
  0. Definitions.
  "This License" refers to version 3 of the GNU General Public License.
  "Copyright" also means copyright-like laws that apply to other kinds of
works, such as semiconductor masks.
  "The Program" refers to any copyrightable work licensed under this
License.  Each licensee is addressed as "you".  "Licensees" and
"recipients" may be individuals or organizations.
  To "modify" a work means to copy from or adapt all or part of the work
in a fashion requiring copyright permission, other than the making of an
exact copy.  The resulting work is called a "modified version" of the
earlier work or a work "based on" the earlier work.
  A "covered work" means either the unmodified Program or a work based
on the Program.
  To "propagate" a work means to do anything with it that, without
permission, would make you directly or secondarily liable for
infringement under applicable copyright law, except executing it on a
computer or modifying a private copy.  Propagation includes copying,
distribution (with or without modification), making available to the
public, and in some countries other activities as well.
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Additional permissions that are applicable to the entire Program shall
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  When you convey a copy of a covered work, you may at your option
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  You are not required to accept this License in order to receive or
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  10. Automatic Licensing of Downstream Recipients.
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  11. Patents.
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  A contributor's "essential patent claims" are all patent claims
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  13. Use with the GNU Affero General Public License.
  Notwithstanding any other provision of this License, you have
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  14. Revised Versions of this License.
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  If the Program specifies that a proxy can decide which future
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                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <>.
Also add information on how to contact you by electronic and paper mail.
  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read

Contract Security Audit

Contract ABI



Deployed ByteCode Sourcemap


Swarm Source

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